21078714888

Names of 21078714888

• Cardinal: 21078714888 can be written as Twenty-one billion, seventy-eight million, seven hundred fourteen thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1078714888 × 10¹⁰

Factors of 21078714888

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 422476

Divisors of 21078714888

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 27 28 33 36 42 44 54 56 63 66 72 77 81 84 88 99 108 126 132 154 162 168 189 198 216 231 252 264 297 308 324 378 396 462 504 567 594 616 648 693 756 792 891 924 1134 1188 1386 1512 1782 1848 2079 2268 2376 2772 3564 4158 4536 5544 6237 7128 8316 12474 16632 24948 49896 422453 844906 1267359 1689812 2534718 2957171 3379624 3802077 4646983 5069436 5914342 7604154 8871513 9293966 10138872 11406231 11828684 13940949 15208308 17743026 18587932 22812462 23657368 26614539 27881898 30416616 32528881 34218693 35486052 37175864 41822847 45624924 53229078 55763796 65057762 68437386 70972104 79843617 83645694 91249848 97586643 106458156 111527592 125468541 130115524 136874772 159687234 167291388 195173286 212916312 239530851 250937082 260231048 273749544 292759929 319374468 334582776 376405623 390346572 479061702 501874164 585519858 638748936 752811246 780693144 878279787 958123404 1003748328 1171039716 1505622492 1756559574 1916246808 2342079432 2634839361 3011244984 3513119148 5269678722 7026238296 10539357444 21078714888
• Sum of all divisors σ(n): 73608384960
• Sum of proper divisors (its aliquot sum) s(n): 52529670072
• 21078714888 is an abundant number, because the sum of its proper divisors (52529670072) is greater than itself. Its abundance is 31450955184

Bases of 21078714888

• Binary: 10011101000011000111010101000001000₂
• Hexadecimal: 0x4E863AA08
• Base-36: 9OLQ0I0

Squares and roots of 21078714888

• 21078714888 squared (21078714888²) is 444312221329592852544
• 21078714888 cubed (21078714888³) is 9365530634660440015897601475072
• The square root of 21078714888 is 145185.1055997137
• The cube root of 21078714888 is 2762.3669959319

Scales and comparisons

• 21,078,714,888 seconds is equal to 670 years, 12 weeks, 2 days, 14 hours, 34 minutes, 48 seconds.
• To count from 1 to 21,078,714,888 would take you about one thousand, three hundred forty years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21078714888 cubic inches would be around 230.2 feet tall.

Recreational maths with 21078714888

• 21078714888 backwards is 88841787012
• 21078714888 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21078714888's digits is 54
• More coming soon!